Traverse mechanism of spinning machines



Feb. 5, 1952 F. E. SMALLSHAW TRAVERSE MECHANISM OF SPINNING MACHINES Filed March 22, 1948 Q WW 5 Q Q \NVENTOR,

FR HNCIS E. SNIHLLSHHW Patented Feb. 5, 1952 FPATENT OFFICE- TRAVERSE MECH ANfM F SPINNIN MACHINES Francis Edward. Small shaw, Hyde, .England, v asa signorto' Ashton Brothers &;.Company Limited, Hyde, England; a'British company Application 'Ma'rcii'z'z; 1948, Serial Nol ie-26s 'I'his-invention relates to improvements in the traverse mechanism for effecting the chase and.

building of packages in ring spinning or like frames, As known, the traverse mechanismfor dealing-with the chase andbuildingis imposed on the-motion for actuating'the'ring rail, and

is usually controlledby" a heart cam governing' the chase traverse and a progressively l acting ratcht wheel mechanism which controls the lift 1o :jcylindrical cam 19 being in the form of ascroll v of said rail, the latter mechanism operating a variable sector or toothed quadrant drive or other mechanishifor progressively building" the cop. For some yarn'p'ackage's, and particularly-those required for use in the shuttle 0f an automatic loom, it iscustomaryto' start the packa e with a few coils o'f yarn" "clos'ely spaced' together at the butt end or the-bobbin to form abun'ch 2 or small reservoir of yarn. This bunch mayo be. formed by mama: operation of a .lever connected .r to the traverse niechanism; or byautomatic mechanism;- V

The ob ject of thepresent invention is .to pro-,.'. vide arsimple'andefiective means of formingthe' 4 bunch automatically;- whereby once the machine. :1 V

fie-t n is piv ted at 34 o a bracke 35 f i p is started up the traverse motion forms .the bunch and then proceeds without f-urther at:

tention to build the yarn package in the normal According to the present invention, a traverse mechanism of the kindyreferred to for impartin the-coppin or ui m t to t lr ns rails of spinning or like frames isprovided; wherein the chase is govemed'cby :two cams one of which controls the chase during the initial stages oftheb-uilding of the package whil t,the ,35

othenlcqnt qls: t e p a e r n t e rem inder. c of thebuildin pe io wh y. e difiere t Fig.1 is a perspective iew of the, trayerse ,4 mechanism constructed in accordance with the,

Figs-12 and. agar; detail views showiii ftrie ,fl5 rail due tosthewotation of drum 24 willvbeauto-l cams fashionedvas a singlecam unit. 7 t .t

In thezpreferred embodiment ofuthe invention,

a spinning machine and the mechanismforiactu-u .7 atingthe chase traverse andithe. build ofithe v packages, -are..l constructed, in accordance with.

haa, u. ,suppertedqin thels dfi. fr i sane, carrying :a, howl,,s ,haft I3 onwhich is slidably 7 v and rotatablymonnted a ,bowl or rollers follower A Miwhich works a cam block mounted on a scam shaft J5 journalled in bearings located in the side framelilz ofvthe spinning machine. The shaft l.5..isvdriv e,n by worm wheel ll and worm (not shown) 'mountedon the drive shaft [8 The cam blockcomprises two cams, l9 and 20, the

or helical groove 2| out in the periphery of the cam block and is substantially square in cross sectionmh'lhe edge camgZ Ii-is a heart-shape cam also having a peripheral groove 22 which lfiteffect afcontinuation of the \scroll or helical groove, 2|. Journalled .inthe oscillating framework lflis ashaft 2 3 on which is mounted a drum 24 adapted to receive a chain 25 which extends,vertically. upwards.to a 26 mounted 7 20 on a shaft 21 journalled in the spinning-frame 28; compounded with the drum 26 is a further drum 29which is connected by chain 30 to chain wheel 3.! rotatably mounted at the end ofan arm 32 pivotally attached to lever 33 which of thespinning vframe. ,The lever 33 has lateral I extensions jfi, 31,, the outer end of 31 being pivotally connected tothe poker attached by its upper-endytothering rail-4|, whilst the ex- 30 tension 38 is attached throughthe intermediary of chain 4l c and,. sprocket 42 to the-poker 43 also attached to ring. rail '41. Itwillbe obvious that-the vertical movement of follower I4 under the) action; of, the cam block will cause the ring -rail.to ,move, up and down to effect the chase.

In ordervtot ansm ,ihe opp ng o uil in motion to the ring rails,; the oscillating framework is; provided with a. mechanism of known construction comprising a ratchet wheel 44- I ,40cmounted-on-a-shaft 4-5 andadapted to;be rotated one or more =teeth-by-ratchet-4con each down ward movement of framework I0. Theshaft 45 is connectedrthrough worm 41' and worm, wheel 48 to the shaft, 23,0f c d-rum 24,. whereby the,.ring.:;

matically: and intermittentlysliftedas; the ;spinnine prgces tpltogresse 1;: Theiihelical groove 52L of scroll cam I9 is of approximately V afpitch; and the radial distance;

knownipractice; In Fig. loof the, drawings,' i0.n1y1- r':cf the .root of. said grooves fromuthe' central axis.

so .much of the spinningmachine is ."shownas is necessary to ,understand the construction. ar rangement and .operation of the, improved .traverse-mechanism. Suchitraverseimechanism com-.11 prisesll'an oscillating; frameworksl'flppivnteddionsuui such .fradial :di'stance. s'I-he' said""gro'ovel2"l:' con-1'27 of thei shaftahd. the :oscillatingaframework I 0;.will0fic'durse' movenp anddown .to efiec't the initial or 'buncliingf. stage of l the 'copibuilding operationiiiinaccordance with' ithe variation in" minimum radius of the scroll cam I9, so that as the bowl follower [4 reaches the end of the the bowl folgroove 2|, it is caused to progress easily in to the groove 22 of the heart-shaped cam, where it re:

mains during the remainder of the cop building operation.

The throw of the cam surface formed by the helical groove is such as to provide the short chase on the bobbin when forming the -bunch at the start of the spinning operation, but does not operate the ratchet-operated copping or cop-building motion. It has been found convenient to arrange the maximum throw of the scroll cam so that it is approximately onequarter of the maximum throw of the heart cam.-

The scroll cam illustrated-in the drawings provides four cyclicmovements of the bowl .in the course of one revolution of the cam shaft; hence its shape is substantially square in cross-section, but obviously the number of cyclic movements in any one revolution of the cam shaft can be varied to suit the bunching requirements. The length of the helical groove is made to suit the longest length of yarn required in the bunch and shorter lengths may be made by engaging the bowl with thecam 19 at intermediate positions along the groove 2 I.

The general shape of the scroll cam may be roughly cylindrical or conical as desired, and the throw of the camsurface in the scroll may be kept the same throughout the scroll, or it may be varied. For example, the shape may be such as to give a chase which starts short, and steadily lengthens in order that successive layers of yarn lock each other and bind the bunch securely in position on the bobbin.

The bowl may be mounted on the main lever in a convenient manner which provides both easy rotation and sliding of the bowl along its shaft. For example, the axis of the bowl shaft may be slightly twisted relative to the axis of the scroll cam, in order to ease the motion of the bowl in the helical groove of the scroll, or alternatively, the bowl may rotate on a spherical boss which is slidably mounted on the bowl shaft so that the axis of rotation of thebowl may be self-adjusting first to the angle of the helix, and then to the track of the heart cam.

The heart cam may be provided With a wall or projecting ridge on'the side next to the scroll and having a gap "therein at the confluence of the helical groove and the track of the heart cam and the bowl may be loaded by cord and weight or other means so that'it bears against the projecting ridge and returns automatically to the 7 far end of the scroll ready for restarting when it is moved out of contact with the heart cam..

and passes or rides on to the periphery of the heart cam, where it remains to govern the chase during the remainder of the winding and building operation and until the yarn package is complete, when the mechanism is reset to make another package.

The scroll cam and bowl may be fitted to existing spinning machines by minor modifications -to some of the brackets.

Obviously, the invention is not limited to the details of the embodiment described, and modifications may be made without departing from the 1 scope of the invention. 'For example, the pitch of the helicalgroove on the scroll cam may be varied according to requirements, and may be disposed on either side of the heart cam to suit varying constructions of ring frame, and the groove may be either right or left hand.

' Further, other means may be provided in lieu of the helical groove to move the bowl axially of the cam governing the chase of the bunch. In this case, said cam is constructed without the helical groove but of the same width as the superseded scroll cam, and having a cam face so shaped as to impart the necessary rise and fall to the main lever to produce the requisite chase. The bowl would be moved axially along its shaft by any suitable or separate mechanism which would also cause the bowl to ride on to the periphcry of the heart cam at the end ofsaid axial movement, hold the bowl in contact with the heart cam during the build of the remainder of the package, and return it to its initial position when starting a fresh package.

I declare that what I claim is: V

l. A traverse mechanism for imparting cop-, building motion to the ring rail of a spinning frame comprising two cams for governing the chase, one said cam being in the form of an annular groove and the other being in the form of a helical groove, a single follower for said cams shaped to enter said grooves, means normally retaining said follower in said annular groove, and means for transferring the follower from one groove to the other.

2. A traverse mechanism according to claim 1, wherein said follower'is a roller, and comprising also a spindle on which the roller is rotatably and slidably mounted, said roller lying alongside the two cams, an oscillating frame carrying said spindle, and chain and roller means for converting the oscillations of said frame into chase motion of the ring rail.

3. A traverse mechanism according to claim 1, wherein said annular cam is a heart-shaped cam cop-building operation and wherein the helical ameters of these cams coinciding in one, dial metrical plane in which plane the follower trans- -In operation, the bowl is set against collar 15* bowl moves up and down with the changes in radius of the helical groove, and also vmoves along the bowl shaft by reason of .the rotation of the helix. Therise and fall -of. the bowl influences the oscillating framework It), and con-# The spinning frame is set" sequently governs'the chase. during the initial stage of spinning to build the bunch at the bottom of each package and the'operation continues. until the bowl leaves the helical groove fers from one cam to the other. 7

4. A traverse mechanism for imparting copb'uilding motion to the ring rail of a spinning frame, comprising an oscillatable open frame, a spindle in said frame parallel with the axis of oscillation- .and a roller with bevelled periphery of oscillation, and a cam secured to said shaft, the major length of said cam being of square .section and having a helical V-groove in its periphery, one end-of said cam being of heart shape in cross section with an annular V-groove there.-

in, thesaid grooves having. a common. leastdiameter in one diametrical plane and being in open 7 6 UNITED STATES PATENTS communication in such plane to allow the fol- Number Name Date lower to pass from one 1'10 the other. Lengweiler y 1,430,775 Watson et a1. Oct. 3, 1922 FRANCIS EDWARD SMALLSHAW- 1,556,815 Burdett Oct. 13, 1925 1,646,561 Skedgell Oca. 25, 1927 2 034 404 Lubberhuizen et a1. 1 Mar. 1'7 1936 1 F1" Th f n .REFEfMNCES f d th 7 2,146,435 Jacques Feb. '1, 1939 e 0 owing re erences are 0 recor m e file of this patent: is FOREIGN PATENTS Number Country Date Great Britain May 18, 1911 

